1. How many pounds of fat are injected into your rear end with a Brazilian Butt Lift?

The Brazilian Butt Lift procedure uses fat liposuctioned from other parts of the body, usually the stomach or love handles — this is called donor fat. The fat is then purified down to only "good" fat cells, removing excess blood and acids.

2. What does Brazil actually have to do with it?

Brazil has long been known for its love of a good bunda, or bubble butt, on its famed Copacabana and Ipanema beaches: round and curvaceous, with defined hips. It's what Dr. George Lefkovits calls “good projection” - with a small depression in the back just before the butt begins.

The butt is more exciting than the breasts in Brazil -- and butt augmentation outnumbers breast augmentation as a favorite surgery.

3. Why are we so in love with a big booty?

Likely, it dates back to the days when we still walked on all fours. Humans developed thick glutes so we could stand and walk upright. Then, we figured it might be important to reproduce -- and we noticed a bigger booty signified good health and thereby, high reproductive potential. So, we all like a healthy (read: shapely, contoured, curvaceous) butt because … science.

In fact, the ancient Greeks raised the butt to divine status -- and worshipped at the temple of Aphrodite Kallipygos also known as Goddess of the Beautiful Buttocks (seen above). Since then, the bum has gone in and out of popularity, but Drs. Lefkovits, Schulman, and Tehrani all know what’s caused the surge in the last 10-15 years: none other than Jennifer Lopez.

4. What look are BBL'ers asking for when they walk into a plastic surgeon's office?